Acetonitrile and iso-propanol were used as the extractivesolvent.
改用乙腈加异丙醇；
2
Conclusion Using75 % alcohol as extractivesolvent is the best procedure.
结论以75 %的乙醇提取为最佳。
3
Furthermore, the oxidant is converted into an extractivesolvent for removing oxidized sulfur and nitrogen compounds from the oxidized petroleum oils after oxidation step.